“In a time when social bridge building is greatly needed, we have lost much of our capacity for public friendliness,” writes Lisa Akchin, associate vice president for marketing and public relations, in a recent Baltimore Sun op-ed. Akchin was responding to President Obama’s recollection of being greeted by the click of car door locks while crossing the street as a young black man. “I know my own hand made that reflexive move for the door lock too many times before my mind considered the impact of my actions as a white woman on the feelings of a young black man,” she says. …